Bob-- +10V on the 10R line is present. DR-7 displays "11100.0" (actually, it starts up reading something else, but then slowly "morphs" into that string of digits and then doesn't change again). Might be the DR-7 board, but my understanding is that a bad DR-7 board shouldn't affect anything else.
--Brian/WA3ITE On Thu, Jul 08, 2010 at 01:24:26PM -0700, Bob W7AVK wrote: > Didn't say if you have PLL and tuning indication as indicated by a > reading on the DR-7. But verify the 10R voltage is there. Its this > 10.0 volts that goes to the various boards during Receive. There are a > pair of small transistors that switch on the 10R and 10T as the TR-7 > transferred between receive and transmit modes. These transistor act as > fuses and open if anything is wrong on either line. Your idea of > pulling the cards to find shorts is a good one. > > Good luck, > > 73 Bob W7AVK _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
